539 lines
22 KiB
JavaScript
539 lines
22 KiB
JavaScript
/*
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* jQuery File Upload User Interface Plugin 6.0.3
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* https://github.com/blueimp/jQuery-File-Upload
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*
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* Copyright 2010, Sebastian Tschan
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* https://blueimp.net
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*
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* Licensed under the MIT license:
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* http://www.opensource.org/licenses/MIT
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*/
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/*jslint nomen: true, unparam: true, regexp: true */
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/*global window, document, URL, webkitURL, FileReader, jQuery */
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(function ($) {
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'use strict';
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// The UI version extends the basic fileupload widget and adds
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// a complete user interface based on the given upload/download
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// templates.
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$.widget('blueimpUI.fileupload', $.blueimp.fileupload, {
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options: {
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// By default, files added to the widget are uploaded as soon
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// as the user clicks on the start buttons. To enable automatic
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// uploads, set the following option to true:
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autoUpload: false,
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// The following option limits the number of files that are
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// allowed to be uploaded using this widget:
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maxNumberOfFiles: undefined,
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// The maximum allowed file size:
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maxFileSize: undefined,
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// The minimum allowed file size:
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minFileSize: 1,
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// The regular expression for allowed file types, matches
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// against either file type or file name:
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acceptFileTypes: /.+$/i,
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// The regular expression to define for which files a preview
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// image is shown, matched against the file type:
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previewFileTypes: /^image\/(gif|jpeg|png)$/,
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// The maximum file size for preview images:
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previewMaxFileSize: 5000000, // 5MB
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// The maximum width of the preview images:
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previewMaxWidth: 80,
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// The maximum height of the preview images:
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previewMaxHeight: 80,
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// By default, preview images are displayed as canvas elements
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// if supported by the browser. Set the following option to false
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// to always display preview images as img elements:
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previewAsCanvas: true,
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// The expected data type of the upload response, sets the dataType
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// option of the $.ajax upload requests:
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dataType: 'json',
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// The add callback is invoked as soon as files are added to the fileupload
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// widget (via file input selection, drag & drop or add API call).
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// See the basic file upload widget for more information:
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add: function (e, data) {
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var that = $(this).data('fileupload'),
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files = data.files;
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that._adjustMaxNumberOfFiles(-files.length);
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data.isAdjusted = true;
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data.files.valid = data.isValidated = that._validate(files);
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data.context = that._renderUpload(files)
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.appendTo(that._files)
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.data('data', data);
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// Force reflow:
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that._reflow = that._transition && data.context[0].offsetWidth;
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data.context.addClass('in');
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if ((that.options.autoUpload || data.autoUpload) &&
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data.isValidated) {
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data.submit();
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}
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},
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// Callback for the start of each file upload request:
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send: function (e, data) {
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if (!data.isValidated) {
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var that = $(this).data('fileupload');
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if (!data.isAdjusted) {
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that._adjustMaxNumberOfFiles(-data.files.length);
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}
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if (!that._validate(data.files)) {
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return false;
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}
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}
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if (data.context && data.dataType &&
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data.dataType.substr(0, 6) === 'iframe') {
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// Iframe Transport does not support progress events.
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// In lack of an indeterminate progress bar, we set
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// the progress to 100%, showing the full animated bar:
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data.context.find('.progressbar div').css(
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'width',
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parseInt(100, 10) + '%'
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);
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}
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},
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// Callback for successful uploads:
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done: function (e, data) {
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var that = $(this).data('fileupload'),
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template,
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preview;
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if (data.context) {
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data.context.each(function (index) {
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var file = ($.isArray(data.result) &&
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data.result[index]) || {error: 'emptyResult'};
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if (file.error) {
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that._adjustMaxNumberOfFiles(1);
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}
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that._transitionCallback(
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$(this).removeClass('in'),
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function (node) {
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template = that._renderDownload([file]);
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preview = node
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.find('.preview img, .preview canvas');
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if (preview.length) {
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template.find('.preview img')
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.prop('width', preview.prop('width'))
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.prop('height', preview.prop('height'));
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}
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template
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.replaceAll(node);
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// Force reflow:
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that._reflow = that._transition &&
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template[0].offsetWidth;
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template.addClass('in');
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}
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);
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});
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} else {
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template = that._renderDownload(data.result)
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.appendTo(that._files);
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// Force reflow:
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that._reflow = that._transition && template[0].offsetWidth;
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template.addClass('in');
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}
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},
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// Callback for failed (abort or error) uploads:
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fail: function (e, data) {
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var that = $(this).data('fileupload'),
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template;
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that._adjustMaxNumberOfFiles(data.files.length);
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if (data.context) {
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data.context.each(function (index) {
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if (data.errorThrown !== 'abort') {
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var file = data.files[index];
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file.error = file.error || data.errorThrown ||
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true;
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that._transitionCallback(
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$(this).removeClass('in'),
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function (node) {
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template = that._renderDownload([file])
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.replaceAll(node);
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// Force reflow:
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that._reflow = that._transition &&
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template[0].offsetWidth;
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template.addClass('in');
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}
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);
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} else {
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that._transitionCallback(
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$(this).removeClass('in'),
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function (node) {
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node.remove();
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}
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);
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}
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});
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} else if (data.errorThrown !== 'abort') {
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that._adjustMaxNumberOfFiles(-data.files.length);
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data.context = that._renderUpload(data.files)
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.appendTo(that._files)
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.data('data', data);
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// Force reflow:
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that._reflow = that._transition && data.context[0].offsetWidth;
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data.context.addClass('in');
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}
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},
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// Callback for upload progress events:
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progress: function (e, data) {
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if (data.context) {
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data.context.find('.progressbar div').css(
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'width',
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parseInt(data.loaded / data.total * 100, 10) + '%'
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);
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}
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},
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// Callback for global upload progress events:
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progressall: function (e, data) {
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$(this).find('.fileupload-progressbar div').css(
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'width',
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parseInt(data.loaded / data.total * 100, 10) + '%'
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);
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},
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// Callback for uploads start, equivalent to the global ajaxStart event:
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start: function () {
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$(this).find('.fileupload-progressbar')
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.addClass('in').find('div').css('width', '0%');
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},
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// Callback for uploads stop, equivalent to the global ajaxStop event:
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stop: function () {
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$(this).find('.fileupload-progressbar')
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.removeClass('in').find('div').css('width', '0%');
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},
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// Callback for file deletion:
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destroy: function (e, data) {
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var that = $(this).data('fileupload');
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if (data.url) {
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$.ajax(data);
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}
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that._adjustMaxNumberOfFiles(1);
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that._transitionCallback(
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data.context.removeClass('in'),
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function (node) {
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node.remove();
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}
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);
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}
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},
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// Link handler, that allows to download files
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// by drag & drop of the links to the desktop:
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_enableDragToDesktop: function () {
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var link = $(this),
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url = link.prop('href'),
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name = decodeURIComponent(url.split('/').pop())
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.replace(/:/g, '-'),
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type = 'application/octet-stream';
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link.bind('dragstart', function (e) {
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try {
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e.originalEvent.dataTransfer.setData(
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'DownloadURL',
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[type, name, url].join(':')
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);
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} catch (err) {}
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});
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},
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_adjustMaxNumberOfFiles: function (operand) {
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if (typeof this.options.maxNumberOfFiles === 'number') {
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this.options.maxNumberOfFiles += operand;
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if (this.options.maxNumberOfFiles < 1) {
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this._disableFileInputButton();
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} else {
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this._enableFileInputButton();
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}
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}
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},
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_formatFileSize: function (bytes) {
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if (typeof bytes !== 'number') {
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return '';
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}
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if (bytes >= 1000000000) {
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return (bytes / 1000000000).toFixed(2) + ' GB';
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}
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if (bytes >= 1000000) {
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return (bytes / 1000000).toFixed(2) + ' MB';
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}
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return (bytes / 1000).toFixed(2) + ' KB';
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},
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_hasError: function (file) {
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if (file.error) {
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return file.error;
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}
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// The number of added files is subtracted from
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// maxNumberOfFiles before validation, so we check if
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// maxNumberOfFiles is below 0 (instead of below 1):
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if (this.options.maxNumberOfFiles < 0) {
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return 'maxNumberOfFiles';
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}
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// Files are accepted if either the file type or the file name
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// matches against the acceptFileTypes regular expression, as
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// only browsers with support for the File API report the type:
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if (!(this.options.acceptFileTypes.test(file.type) ||
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this.options.acceptFileTypes.test(file.name))) {
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return 'acceptFileTypes';
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}
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if (this.options.maxFileSize &&
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file.size > this.options.maxFileSize) {
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return 'maxFileSize';
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}
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if (typeof file.size === 'number' &&
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file.size < this.options.minFileSize) {
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return 'minFileSize';
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}
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return null;
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},
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_validate: function (files) {
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var that = this,
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valid = !!files.length;
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$.each(files, function (index, file) {
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file.error = that._hasError(file);
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if (file.error) {
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valid = false;
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}
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});
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return valid;
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},
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_renderTemplate: function (func, files) {
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return $(this.options.templateContainer).html(func({
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files: files,
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formatFileSize: this._formatFileSize,
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options: this.options
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})).children();
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},
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_renderUpload: function (files) {
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var that = this,
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options = this.options,
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nodes = this._renderTemplate(options.uploadTemplate, files);
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nodes.find('.preview span').each(function (index, node) {
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var file = files[index];
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if (options.previewFileTypes.test(file.type) &&
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(!options.previewMaxFileSize ||
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file.size < options.previewMaxFileSize)) {
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window.loadImage(
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files[index],
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function (img) {
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$(node).append(img);
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// Force reflow:
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that._reflow = that._transition &&
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node.offsetWidth;
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$(node).addClass('in');
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},
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{
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maxWidth: options.previewMaxWidth,
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maxHeight: options.previewMaxHeight,
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canvas: options.previewAsCanvas
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}
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);
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}
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});
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return nodes;
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},
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_renderDownload: function (files) {
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var nodes = this._renderTemplate(
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this.options.downloadTemplate,
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files
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);
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nodes.find('a').each(this._enableDragToDesktop);
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return nodes;
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},
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_startHandler: function (e) {
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e.preventDefault();
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var button = $(this),
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tmpl = button.closest('.template-upload'),
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data = tmpl.data('data');
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if (data && data.submit && !data.jqXHR && data.submit()) {
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button.prop('disabled', true);
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}
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},
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_cancelHandler: function (e) {
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e.preventDefault();
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var tmpl = $(this).closest('.template-upload'),
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data = tmpl.data('data') || {};
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if (!data.jqXHR) {
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data.errorThrown = 'abort';
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e.data.fileupload._trigger('fail', e, data);
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} else {
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data.jqXHR.abort();
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}
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},
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_deleteHandler: function (e) {
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e.preventDefault();
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var button = $(this);
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e.data.fileupload._trigger('destroy', e, {
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context: button.closest('.template-download'),
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url: button.attr('data-url'),
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type: button.attr('data-type'),
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dataType: e.data.fileupload.options.dataType
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});
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},
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_transitionCallback: function (node, callback) {
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var that = this;
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if (this._transition && node.hasClass('fade')) {
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node.bind(
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this._transitionEnd,
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function (e) {
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// Make sure we don't respond to other transitions events
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// in the container element, e.g. from button elements:
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if (e.target === node[0]) {
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node.unbind(that._transitionEnd);
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callback.call(that, node);
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}
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}
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);
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} else {
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callback.call(this, node);
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}
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},
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_initTransitionSupport: function () {
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var that = this,
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style = (document.body || document.documentElement).style,
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suffix = '.' + that.options.namespace;
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that._transition = style.transition !== undefined ||
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style.WebkitTransition !== undefined ||
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style.MozTransition !== undefined ||
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style.MsTransition !== undefined ||
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style.OTransition !== undefined;
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if (that._transition) {
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that._transitionEnd = [
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'MSTransitionEnd',
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'webkitTransitionEnd',
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'transitionend',
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'oTransitionEnd'
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].join(suffix + ' ') + suffix;
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}
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},
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_initButtonBarEventHandlers: function () {
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var fileUploadButtonBar = this.element.find('.fileupload-buttonbar'),
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filesList = this._files,
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ns = this.options.namespace;
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fileUploadButtonBar.find('.start')
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.bind('click.' + ns, function (e) {
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e.preventDefault();
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filesList.find('.start button').click();
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});
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fileUploadButtonBar.find('.cancel')
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.bind('click.' + ns, function (e) {
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e.preventDefault();
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filesList.find('.cancel button').click();
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});
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fileUploadButtonBar.find('.delete')
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.bind('click.' + ns, function (e) {
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e.preventDefault();
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filesList.find('.delete input:checked')
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.siblings('button').click();
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});
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fileUploadButtonBar.find('.toggle')
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.bind('change.' + ns, function (e) {
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filesList.find('.delete input').prop(
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'checked',
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$(this).is(':checked')
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);
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});
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},
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_destroyButtonBarEventHandlers: function () {
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this.element.find('.fileupload-buttonbar button')
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.unbind('click.' + this.options.namespace);
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this.element.find('.fileupload-buttonbar .toggle')
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.unbind('change.' + this.options.namespace);
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},
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_initEventHandlers: function () {
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$.blueimp.fileupload.prototype._initEventHandlers.call(this);
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var eventData = {fileupload: this};
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this._files
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.delegate(
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'.start button',
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'click.' + this.options.namespace,
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eventData,
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this._startHandler
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)
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.delegate(
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'.cancel button',
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'click.' + this.options.namespace,
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eventData,
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this._cancelHandler
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)
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.delegate(
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'.delete button',
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'click.' + this.options.namespace,
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eventData,
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this._deleteHandler
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);
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this._initButtonBarEventHandlers();
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this._initTransitionSupport();
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},
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_destroyEventHandlers: function () {
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this._destroyButtonBarEventHandlers();
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this._files
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.undelegate('.start button', 'click.' + this.options.namespace)
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.undelegate('.cancel button', 'click.' + this.options.namespace)
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.undelegate('.delete button', 'click.' + this.options.namespace);
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$.blueimp.fileupload.prototype._destroyEventHandlers.call(this);
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},
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_enableFileInputButton: function () {
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this.element.find('.fileinput-button input')
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.prop('disabled', false)
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.parent().removeClass('disabled');
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},
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_disableFileInputButton: function () {
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this.element.find('.fileinput-button input')
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.prop('disabled', true)
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.parent().addClass('disabled');
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},
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_initTemplates: function () {
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this.options.templateContainer = document.createElement(
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this._files.prop('nodeName')
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);
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this.options.uploadTemplate = window.tmpl('template-upload');
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this.options.downloadTemplate = window.tmpl('template-download');
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},
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_initFiles: function () {
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this._files = this.element.find('.files');
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},
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_create: function () {
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this._initFiles();
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$.blueimp.fileupload.prototype._create.call(this);
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this._initTemplates();
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},
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destroy: function () {
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$.blueimp.fileupload.prototype.destroy.call(this);
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},
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enable: function () {
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$.blueimp.fileupload.prototype.enable.call(this);
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this.element.find('input, button').prop('disabled', false);
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this._enableFileInputButton();
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},
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disable: function () {
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this.element.find('input, button').prop('disabled', true);
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this._disableFileInputButton();
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$.blueimp.fileupload.prototype.disable.call(this);
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}
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});
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}(jQuery));
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